Local Calling Guide
Area code/prefix search
NPA: 331
[Rate centres in NPA 331]
[Dial plan for NPA 331]
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| NPA-NXX |
BLOCK |
Rate Centre |
Region |
Switch |
OCN |
LATA |
LIR |
Eff date |
Disc date |
| 331-200
| A |
Bartlett |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 331-200
| 0 |
Bartlett |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2011-08-25 |
|
| 331-200
| 1 |
Bartlett |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2012-12-15 |
|
| 331-200
| 2 |
Bartlett |
IL |
CHCGILGMDS7 |
6115 LEVEL 3 COMMUNICATIONS, LLC - IL |
358 |
|
2011-12-24 |
|
| 331-200
| 3 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2012-12-27 |
|
| 331-200
| 4 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2012-05-25 |
|
| 331-200
| 5 |
Bartlett |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2013-08-23 |
|
| 331-200
| 6 |
Bartlett |
IL |
CHCGILDT8MD |
508J CENTURYLINK COMMUNICATIONS, LLC |
358 |
|
2013-06-26 |
|
| 331-200
| 7 |
Bartlett |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2013-04-27 |
|
| 331-200
| 8 |
Bartlett |
IL |
CHCGILWUDS4 |
063E PEERLESS NETWORK OF ILLINOIS, LLC - IL |
358 |
|
2013-04-27 |
|
| 331-200
| 9 |
Bartlett |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2011-08-25 |
|
| 331-201
| A |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
|
|
| 331-201
| 0 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2012-03-09 |
|
| 331-201
| 1 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2012-03-09 |
|
| 331-201
| 2 |
Downers Grove |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2012-04-21 |
|
| 331-201
| 3 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2012-04-29 |
|
| 331-201
| 4 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2012-05-19 |
|
| 331-201
| 5 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2012-05-19 |
|
| 331-201
| 6 |
Downers Grove |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-09-23 |
|
| 331-201
| 7 |
Downers Grove |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-10-26 |
|
| 331-201
| 8 |
Downers Grove |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2012-12-20 |
|
| 331-201
| 9 |
Downers Grove |
IL |
RVDLILBDAMD |
6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL |
358 |
|
2012-12-28 |
|
| 331-202
| A |
Elmhurst |
IL |
ELGNILOTGT5 |
5562 METROPCS, INC. |
358 |
|
|
|
| 331-202
| 0 |
Elmhurst |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2012-03-02 |
|
| 331-202
| 1 |
Elmhurst |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-02-25 |
|
| 331-202
| 2 |
Elmhurst |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2024-04-20 |
|
| 331-202
| 4 |
Elmhurst |
IL |
|
224C ONVOY, LLC |
358 |
|
2025-09-07 |
|
| 331-202
| 5 |
Elmhurst |
IL |
|
145J TERRA NOVA TELECOM INC. |
358 |
|
2025-04-09 |
|
| 331-202
| 6 |
Elmhurst |
IL |
CHCGILWUSMD |
145J TERRA NOVA TELECOM INC. |
358 |
|
2024-08-12 |
|
| 331-202
| 7 |
Elmhurst |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2012-03-02 |
|
| 331-202
| 8 |
Elmhurst |
IL |
|
6529 T-MOBILE USA, INC. |
358 |
|
2012-03-02 |
|
| 331-202
| 9 |
Elmhurst |
IL |
|
145J TERRA NOVA TELECOM INC. |
358 |
|
2023-11-15 |
|
| 331-203
| A |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
|
|
| 331-203
| 0 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2011-11-26 |
|
| 331-203
| 1 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2011-11-26 |
|
| 331-203
| 2 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2011-11-26 |
|
| 331-203
| 3 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2011-11-26 |
|
| 331-203
| 4 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2011-11-26 |
|
| 331-203
| 5 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2011-11-26 |
|
| 331-203
| 6 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2011-11-26 |
|
| 331-203
| 7 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2011-11-26 |
|
| 331-203
| 8 |
Aurora |
IL |
ELGNILOTGT5 |
6529 T-MOBILE USA, INC. |
358 |
|
2011-11-26 |
|
| 331-203
| 9 |
Aurora |
IL |
CHCGILIDXDX |
624H ONVOY SPECTRUM, LLC |
358 |
|
2023-11-17 |
|
| 331-204
| A |
Naperville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
|
|
| 331-204
| 0 |
Naperville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-02-11 |
|
| 331-204
| 1 |
Naperville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-02-11 |
|
| 331-204
| 2 |
Naperville |
IL |
BFGVILASG00 |
6534 NEW CINGULAR WIRELESS PCS, LLC - IL |
358 |
|
2016-04-14 |
|
| 331-204
| 3 |
Naperville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-05-01 |
|
| 331-204
| 4 |
Naperville |
IL |
CHCGIL24DS6 |
224C ONVOY, LLC |
358 |
|
2016-05-01 |
|
| 331-204
| 5 |
Naperville |
IL |
CHCGILWBXDZ |
984E BANDWIDTH.COM CLEC, LLC - IL |
358 |
|
2016-07-16 |
|
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Last updated: Tue, 31 Mar 2026 13:56:49 UTC
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